Hi. I don't see any clear path to monetization. My guess is that you'd have to build something creative (people on TV using slang words accidentally, a dictionary of little known slang words, a site for parents to see if movies are appropriate for their kids, etc) and hope to get traffic. As is I can't see it reselling for much despite it being reasonably generic.
Then again, at as little as reg fee who knows? I guess its worth seeing if it has ever been able to get traffic and if anything similar has sold.